During the flight Pilot Vic says: "You see that? she's... huge!" when you fly near Rainspeaker Rapids where the questgiver Avatar of Freya is fighting against Bonescythe Ravager. When you start this quest Reconnaissance Flight you will likely have also picked up Force of Nature which sends you to Avatar of Freya.

Once the flight reaches the Avalanche, the plane will be attacked by the undead bats that patrol the skies around it. You will be forced to take the plane back to the Lakeside Landing at River's Heart before the engine completely goes. Do not take any shortcuts - go STRAIGHT there, and go as soon as you have control of the plane! The engine fire will take HP from the plane gradually; if it gets to zero, the plane will be destroyed and you will parachute to the ground (and thus would have to return to Lakeside Landing and do the flight again).

Once you arrive at the Landing, press 1 (Land at Lakeside Landing). Do not dismount, or it will not give you credit.